John 1:36

and, looking upon Jesus as He was walking, says, "Behold, the Lamb of God!"

John 1:29

On the morrow he sees Jesus coming to him, and he says, "Behold, the Lamb of God Who taketh away the sin of the world!

Hebrews 12:2

looking away to the Author and Perfecter of our faith, Jesus; Who, in consideration of the joy lying before Him, endured the cross, despising shame, and hath taken a seat at the right hand of the throne of God.

1 Peter 1:19-20

but with the precious blood of Christ, as of a lamb without blemish and without spot;

Treasury of Scripture Knowledge

Summary

And looking upon Jesus as he walked, he saith, Behold the Lamb of God!

Bible References

Behold

John 1:29
On the morrow he sees Jesus coming to him, and he says, "Behold, the Lamb of God Who taketh away the sin of the world!
Hebrews 12:2
looking away to the Author and Perfecter of our faith, Jesus; Who, in consideration of the joy lying before Him, endured the cross, despising shame, and hath taken a seat at the right hand of the throne of God.
1 Peter 1:19
but with the precious blood of Christ, as of a lamb without blemish and without spot;